JP2008132428A - Filtering plate structure of filter press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filtering plate structure of a filter press which keeps attachment of a net member installed between a filtering cloth and a filtering plate and can easily perform accelerating drain. <P>SOLUTION: The net member 3g for accelerating drain placed excluding a load supporting boss part 3e and a supplying hole 3d on the surface of a filtering plate body 3a of the filter press in which a material to be filtered out is fed by pressure to a filtering chamber 3c formed between adjacent filtering plates 3 by overwrapping and pressing a plurality of filtering plates 3 via the filtering cloth 7 and is dehydrated, can be certainly and easily attached onto an elastic covering member 3h by being attached by net fixing means 11, 12, 13 such as a fixed ring member 11a, a fixed frame member 12b and a fixed engaging ring 13b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a filter plate structure of a filter press, and is provided between a filter cloth and a net member that promotes drainage and can be easily attached.

  Solid-liquid separation is performed for the detoxification of slurries including factory waste liquid and sludge from various work sites, the liquid is detoxified and drained into rivers as clear water, and harmful solid parts are incinerated landfill. Or are collected and recycled for effective reuse.

  A filter press is used as one of the apparatuses capable of reliably processing such a slurry.

  In this filter press, for example, as disclosed in Patent Document 1, as shown in FIG. 6, a pair of stands 2 and 2 are erected on a base 1, and a plurality of filter plates 3 and 3 are provided between the stands 2 and 2. .. Are supported so as to be reciprocally movable along the guide rail 4, and a hydraulic cylinder 5 is provided on one stand 2 side so that each filter plate 3 can be brought into a pressed state or separated from each other, and pressed. In the state, the material to be filtered is pumped through a filter cloth into a filter chamber formed between adjacent filter plates 3 and 3, and the solid-liquid separated filtrate is discharged through a drain chute 6. The solidified cake dehydrated by separating 3 is peeled and dropped from the filter cloth and discharged and removed.

  Each filter plate 3 of such a filter press includes a filter plate body 3a made of a substantially square iron plate, for example, as shown in FIG. A frame member 3b is provided around the front and back sides to form a frame shape. A recess inside the frame member 3b is formed as a filter chamber 3c, and a supply hole 3d for an object to be filtered is provided at the center. A plurality of load supporting bosses 3e are formed in the filter chamber 3c, and the adjacent bosses 3e are brought into contact with each other in a pressed state to support the load.

  The surfaces of the filter plate main body 3a, the frame member 3b, the filter chamber 3c, and the boss 3e are covered with a covering member made of an elastic material (not shown) to prevent such corrosion and adhesion at the time of pressing. Securing and shock mitigation.

  Further, the filter plate 3 has a discharge passage 3f provided in the filter plate main body 3a for discharging the separated filtrate to the outside, and opens on the surface of the covering member. On the surface of the covering member, a net member 3g is provided. It is provided, and the filtrate between the filter cloth 7 and the filter plate 3 is guided to the discharge path 3f.

The net members 3g provided on the front and back surfaces of the filter plate 3 are made of synthetic resin or metal, and are arranged on a covering member made of an elastic material such as rubber. It is done.
International Publication WO2005 / 097288A1

  However, in such a structure of the filter plate 3, since the synthetic resin or metal net member 3g is fixed on the covering member made of an elastic material such as rubber with an adhesive, it is difficult to ensure the adhesive strength and it is easy to peel off. There is a problem.

  In addition, even with a filter plate structure that does not have a covering member made of elastic material such as rubber, a net member can be attached using a fastener, or a hole penetrating the filter plate body can be drilled to sew the front and back net members with water threads. However, there is a problem that the installation is complicated.

  The present invention has been made in view of the above problems of the prior art, and is intended to provide a filter plate structure for a filter press that can be easily attached to a net member that is provided between the filter cloth and promotes drainage. It is.

  The filter plate structure of the filter press according to claim 1 of the present invention that solves the problems of the prior art is a filter cloth in a filter chamber formed between adjacent filter plates by laminating and pressing a plurality of filter plates. The filter plate structure of the filter press that feeds and dehydrates the material to be filtered through the frame, has a frame member around it, a plurality of load support bosses in the middle, A filter plate main body provided with a discharge path, an elastic coating member covering the filter plate main body, a filter plate main body surface covered with the elastic coating member inside the frame member, the load supporting boss portion and the supply hole And a net member for promoting drainage, which is disposed excluding the net member, and the net member is provided on the elastic covering member by providing a net fixing means.

  According to the filter plate structure of this filter press, a plurality of filter plates are overlapped and pressed, and a material to be filtered is pumped through a filter cloth to a filter chamber formed between adjacent filter plates for dehydration. The filter plate structure of the press has a frame member around it, a plurality of load support bosses in the middle, a filter plate main body with a supply hole for the filtration object and a discharge path for the filtrate, and this filter plate main body An elastic covering member for covering, and a net member for promoting drainage disposed on the surface of the filter plate body covered with the elastic covering member inside the frame member, excluding the load supporting boss portion and the supply hole. The net member is provided on the elastic covering member by providing a net fixing means, and can be securely and easily attached on the elastic covering member by attaching the net member by the net fixing means. Can So as to.

  Moreover, the filter plate structure of the filter press according to claim 2 of the present invention is constituted by a fixing ring member that is fitted and fixed to the load supporting boss portion in addition to the structure according to claim 1. It is characterized by this.

  According to the filter plate structure of the filter press, the net fixing means is constituted by a fixing ring member that is fitted and fixed to the load supporting boss portion, and the fixing ring member is fitted using the load supporting boss portion. By inserting the net member, it can be reliably and easily attached.

  Furthermore, the filter plate structure of the filter press according to claim 3 of the present invention is the frame in which the net fixing means is provided on the filter plate body and / or the elastic covering member in addition to the structure of claim 1 or 2. It is characterized by comprising a fixing protrusion that protrudes from the surface inside the member, and a fixing frame member that is fitted and fixed to the fixing protrusion.

  According to the filter plate structure of the filter press, the net fixing means includes a fixing protrusion protruding from the surface inside the frame member provided on the filter plate main body and / or the elastic covering member, and the fixing protrusion. It is configured with a fixed frame member that is fitted into and fixed to the portion, and the net member is sandwiched by inserting the fixed frame member into the fixing protrusion provided on the filter plate main body and / or the elastic covering member. And it becomes possible to attach easily.

  Moreover, the filter plate structure of the filter press according to claim 4 of the present invention is the structure according to any one of claims 1 to 3, wherein the net fixing means is formed on the elastic covering member, It is composed of a locking portion that has an outer peripheral surface that surrounds the inner wall portion and the front and back portions and protrudes from the supply hole to the front and back surfaces of the large diameter, and a fixed locking ring that fits and locks to the outer periphery of this locking portion. It is what.

  According to the filter plate structure of the filter press, the net fixing means is provided with an outer peripheral surface that is formed on the elastic covering member and surrounds the inner wall portion and the front and back portions of the supply hole and protrudes from the supply hole to the front and back surfaces having a larger diameter. The locking portion includes a locking portion and a fixed locking ring that is fitted and locked to the outer periphery of the locking portion, and the locking portion having an outer peripheral surface that protrudes from the supply hole to the front and back surfaces of a larger diameter than the supply hole. By providing and inserting a fixed locking ring on the outer periphery of the locking part and sandwiching the net member, it can be reliably and easily attached.

  Furthermore, the filter plate structure of the filter press according to claim 5 of the present invention is the filter plate structure according to claim 4, in which the net fixing means is replaced with the fixed locking ring, and the filter plate is disposed on the outer periphery of the locking portion. It is characterized by comprising a fixing ring disposed on the front and back of the elastic covering member with a main body interposed therebetween, and a fastening member that penetrates and fixes the fixing ring on the front and back.

  According to the filter plate structure of the filter press, the net fixing means is replaced with the fixed locking ring, and the fixing ring disposed on the front and back of the elastic covering member with the filter plate main body sandwiched on the outer periphery of the locking portion. And a fastening member that passes through and fixes the front and back fixing rings, and the elastic covering member is provided with a locking portion having an outer peripheral surface protruding from the supply hole to the front and back surfaces having a larger diameter. The net member is sandwiched between the fixing rings on the front and back of the outer periphery and tightened with a fastening member that penetrates the net member, so that it can be reliably and easily attached.

  The filter plate structure of the filter press according to claim 6 of the present invention is characterized in that, in addition to the structure according to claim 5, the fixing ring is formed by covering a metal ring with an elastic covering member. is there.

  According to the filter plate structure of the filter press, the fixing ring is formed by covering the metal ring with the elastic covering member, and the rust of the metal ring can be prevented and can be attached reliably and easily.

  Furthermore, the filter plate structure of the filter press according to claim 7 of the present invention is the surface of the elastic covering member that covers the frame member in addition to the structure according to any one of claims 1 to 6. It is characterized by being formed lower.

  According to the filter plate structure of this filter press, the net fixing means is formed lower than the surface of the elastic covering member covering the frame member, so that a load during pressing is not applied to these net fixing means. To make it simple.

  According to the filter plate structure of the filter press according to the first aspect of the present invention, a plurality of filter plates are overlapped and pressed together, and an object to be filtered is passed through a filter cloth in a filter chamber formed between adjacent filter plates. A filter plate structure of a filter press that pumps and dewaters a filter plate body that has a frame member around it, a plurality of load support bosses in the middle, and a supply hole for filtrate and a discharge passage for the filtrate And an elastic covering member covering the filter plate main body, and drainage promotion arranged on the filter plate main body surface covered with the elastic covering member inside the frame member except for the load supporting boss portion and the supply hole. A net fixing member, and the net member is provided on the elastic covering member by providing the net fixing means, so that the net member is attached to the elastic covering member by the net fixing means. Reliably and easily Ri can be attached.

  According to the filter plate structure of the filter press according to claim 2 of the present invention, since the net fixing means is constituted by a fixing ring member that is fitted and fixed to the load supporting boss portion, the load supporting boss portion is By using the fixing ring member and sandwiching the net member, it can be reliably and easily attached.

  Furthermore, according to the filter plate structure of the filter press according to claim 3 of the present invention, the net fixing means is fixed so as to protrude from the surface inside the frame member provided in the filter plate main body and / or the elastic covering member. And a fixing frame member that is fitted and fixed to the fixing protruding portion. Therefore, the fixing frame member is fitted into the fixing protrusion provided on the filter plate main body and / or the elastic covering member. By sandwiching the net member, it can be reliably and easily attached.

  According to the filter plate structure of the filter press according to claim 4 of the present invention, the net fixing means is formed on the elastic covering member and surrounds the inner wall portion and the front and back portions of the supply hole and has a larger diameter than the supply hole. Since it is composed of a locking part with an outer peripheral surface protruding on the front and back and a fixed locking ring that fits and locks on the outer periphery of the locking part, the outer periphery protrudes from the supply hole to the front and back that has a larger diameter than the supply hole By providing a locking portion having a surface and fitting a fixed locking ring around the locking portion and sandwiching the net member, it can be reliably and easily attached.

  Furthermore, according to the filter plate structure of the filter press according to claim 5 of the present invention, the elastic covering member is configured such that the net fixing means is replaced with the fixed locking ring, and the filter plate main body is sandwiched on the outer periphery of the locking portion. Since the fixing ring is arranged on the front and back of the front and the fastening member that penetrates and fixes the front and back fixing rings, the elastic covering member has an outer peripheral surface that protrudes from the supply hole to the front and back. Can be securely and easily attached by tightening with a fastening member that sandwiches and penetrates the net member with fixing rings on the front and back of the outer periphery of the engaging portion.

  According to the filter plate structure of the filter press according to claim 6 of the present invention, since the fixing ring is configured by covering the metal ring with the elastic covering member, the rust of the metal ring is prevented, and it is surely and easily performed. Can be attached.

  Furthermore, according to the filter plate structure of the filter press according to claim 7 of the present invention, the net fixing means is formed lower than the surface of the elastic covering member covering the frame member. The load during tightening is not applied and the structure can be simplified.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 5 relate to one embodiment of a filter plate structure of a filter press according to the present invention, FIG. 1 is a partial longitudinal sectional view in a pressed state, FIG. 2 is a partial sectional view of a load supporting boss portion, and FIG. Is a partial cross-sectional view and a partial front view of the frame member portion, FIG. 4 is a partial cross-sectional view of the supply hole portion of the filtration object, and FIG. It is a front view.

  The filter plate to which the filter plate structure 10 of the filter press according to the present invention is applied has the same basic structure as the filter plate 3 already described with reference to FIGS. 1 to 3, and a filter plate main body 3a made of a substantially square iron plate. A frame member 3b is provided by welding or the like around the front and back of the filter plate main body 3a to form a frame shape, and a concave portion inside the frame member 3b is formed as a filter chamber 3c, and a supply hole for an object to be filtered is provided at the center thereof. 3d is provided. A plurality of load supporting bosses 3e are formed in the filter chamber 3c. In the illustrated example, four bosses 3e are provided, and the bosses 3e of the adjacent filter plates 3 are opposed to each other in a pressed state. By contacting them, the load is dispersed and supported uniformly.

  The surfaces of the filter plate main body 3a, the frame member 3b, the filter chamber 3c, and the boss portion 3e are covered with a covering member 3h made of an elastic material to prevent these corrosions and to prevent adhesion during pressing. It is intended to secure and reduce the impact.

  Further, the filter plate 3 is provided with a discharge passage 3f at the bottom of the filter plate main body 3a for discharging the separated filtrate to the outside, and opens to the surface of the covering member, and penetrates the filter plate main body 3a to the bottom. Is open.

  Further, a net member 3g is provided on the surface of the covering member 3h, and the filtrate between the filter cloth 7 and the filter plate 3 is guided to the discharge path 3f.

  In the filter plate structure 10 applied to such a filter plate 3, fixing of the net member 3 g made of synthetic resin or metal for promoting drainage disposed on the covering member 3 h of an elastic material such as rubber is fixed to the net. By using the means 11 to 14, it is possible to easily and surely attach compared to the case of fixing with an adhesive agent so far.

  The net fixing means 11 to 14 of the filter plate structure 10 are for fixing to the load supporting boss 3e, for fixing to the periphery of the frame member 3b, and for fixing to the supply hole 3d. It is different depending on the fixed part like the ones 13 and 14 for the purpose.

First, the net fixing to the load supporting boss 3e will be described with reference to FIGS.
A plurality of cylindrical load-supporting bosses 3e made of iron or the like are attached to the filter plate 3 by welding in recesses that become the filter chambers 3c on the front and back of the filter plate main body 3a made of iron plate, and these bosses 3e and the filter plate The entire filter plate 3 such as the main body 3a is in a rubber lining state covered with an elastic covering member 3h such as rubber, and net members 3g on the front and back sides of the filter chamber 3c excluding the boss portion 3e rubber-lined with the elastic covering member 3h. Is arranged.

  In the net fixing means 11 of the net member 3g to the load supporting boss portion 3e, as shown in FIGS. 1 and 2, the rubber-made boss portion 3e can be fitted in accordance with the outer diameter of the rubber-lined boss portion 3e. The ring-shaped fixed ring member 11a is used, the side surface is a conical surface, the bottom area is increased to increase the contact area with the net member 3g, and the conical shape is used to damage the filter cloth. It can be prevented. The fixing ring member 11a is lower in height than the rubber-lined boss 3e so that no load acts on the fixing ring member 11a when the filter plate 3 is pressed.

  In such a fixing ring member 11a, the net member 3g having a cutting hole cut through the rubber-lined boss 3e is attached to the rubber-lined surface of the filter plate body 3a of the filter plate 3. Thereafter, the fixing ring member 11a is fitted into the boss portion 3e, and the net member 3g is fixed between the bottom surface of the fixing ring member 11a and the rubber lining. At this time, the adhesive can be more reliably fixed by applying an adhesive to the bottom surface of the fixing ring member 11a or applying an adhesive to the inner peripheral surface of the fixing ring member 11a as necessary.

  Thereby, a plurality of the filter plates 3 are overlapped and pressed through the filter cloth 7 and dehydrated, or even when the filter plates 3 are separated and the dehydrated cake in the filter chamber 3c is dropped, The net member 3g can be fixed by the boss portion 3e of the filter plate 3 in a stable state, and the attachment can be simply performed by fitting the fixing ring member 11a such as rubber to the boss portion 3e.

Next, net fixing to the inner periphery of the frame member 3b of the filter plate 3 will be described with reference to FIGS.
A frame member 3b is welded and attached to the filter plate 3 around the front and back of a filter plate body 3a made of a substantially square iron plate, and a frame-like recess is formed inside the frame member 3b. The entire filter plate 3 such as the frame member 3b and the filter plate main body 3a is covered with an elastic covering member 3h such as rubber, and the filter chamber 3c is rubber-lined with the elastic covering member 3h. Each net member 3g is arranged.

  In the net fixing means 12 for fixing the net member 3g to the inner periphery of the frame member 3b, as shown in FIGS. 1 and 3, the elastic covering member 3h is spaced from the inner periphery of the rubber lining surface of the frame member 3b. The fixing protrusion 12a having a rectangular cross section is integrally formed so as to protrude outward from the surface of the filter chamber 3c, and is arranged in a frame shape. The fixing protrusion 12a is not limited to being formed integrally with the elastic covering member 3h, as shown in the illustrated example, but a steel plate or the like is welded to the filter plate body 3a and arranged in a frame shape. It may be formed by lining, and the strength can be further increased.

A fixing frame member 12b made of rubber or the like is fitted into the fixing protrusion 12a so that the net member 3g can be sandwiched between the bottom surfaces thereof.
The fixed frame member 12b has a transverse cross-sectional shape that is parallel in the vertical direction, the outer surface is a vertical surface, the inner surface is an inclined surface, and has a wide bottom surface. The fixing protrusion 12a opens to the bottom surface and is fixed. A fitting hole is formed, and the outer surface is fitted to the inner periphery of the elastic covering member 3h in a state where the fitting hole is fitted into the fixing protrusion 12a. The fixed frame member 12b is lower in height than the rubber-lined frame member 3b so that no load is applied to the fixed frame member 12b in a state where the filter plate 3 is pressed. Such a fixed frame member 12b is formed into a frame shape by joining rod-shaped members so as to abut at an angle of 45 degrees at a corner portion of the frame member 3b. It should be noted that this frame-like joining may be assembled while joining at the time of attachment even before attachment.

  Such a fixing frame member 12b is formed on the rubber-lined surface of the filter plate body 3a of the filter plate 3 by attaching the net member 3g having a cutting hole cut through the rubber-lined fixing protrusion 12a. After the attachment, the fixing frame member 12b is fitted into the fixing protrusion 12a, and the net member 3g is fixed between the bottom surface of the fixing frame member 12b and the rubber lining. At this time, if necessary, an adhesive can be applied to the bottom surface of the fixed frame member 12b, or an adhesive can be applied to the outer peripheral surface of the fixed frame member 12b, so that the fixing can be further ensured.

  Thereby, a plurality of the filter plates 3 are overlapped and pressed through the filter cloth 7 and dehydrated, or even when the filter plates 3 are separated and the dehydrated cake in the filter chamber 3c is dropped, The net member 3g can be fixed around the filter plate 3 in a stable state, and the attachment can be simplified simply by fitting the fixing frame member 12b such as rubber to the fixing protrusion 12a.

Next, the net fixing of the material to be filtered of the filter plate 3 to the supply hole 3d will be described with reference to FIGS.
The filter plate 3 is formed with a supply hole 3d that penetrates the front and back of the filter plate main body 3a made of a substantially square steel plate and feeds the material to be filtered. The filter plate main body 3a, the supply hole 3d, and the like The entire filter plate 3 is in a rubber lining state covered with an elastic covering member 3h such as rubber, and net members 3g are respectively arranged on the front and back of the filter chamber 3c rubber-lined with the elastic covering member 3h.

  In the net fixing means 13 for fixing the net member 3g around the supply hole 3d of the filter plate 3, as shown in FIGS. 1 and 4, the cylindrical inner wall surface of the supply hole 3d and the filter plate main body 3a. The front and rear surfaces of the elastic coating member 3h are integrally formed with a locking portion 13a having a cylindrical outer peripheral surface larger in diameter than the supply hole 3d. A locking portion 13a constituted by this outer peripheral surface protrudes from the surface of the filter chamber 3c in a step shape.

  The locking member 13a having the cylindrical outer peripheral surface is fitted with a disk-shaped fixed locking ring 13b so that the net member 3g can be sandwiched.

  The fixed locking ring 13b is provided with a rubber lining in which the outside of an iron disk is covered with rubber or the like, and the inner peripheral surface is fitted in a state of being fitted into the locking portion 13a. Further, the locking portions 13a and the fixed locking ring 13b are lower in height than the rubber-lined frame member 3b and the boss portion 3e. The load is not applied to the fixed locking ring 13b.

  In such a net fixing means 13, the net member 3 g in which the attachment hole capable of penetrating the engaging portion 13 a of the elastic covering member 3 h is cut on the rubber-lined surface of the filter plate body 3 a of the filter plate 3. After the mounting, the fixed locking ring 13b is fitted into the locking portion 13a, and the net member 3g is fixed between the filter plate main body 3a and the rubber lining. At this time, if necessary, an adhesive can be applied to the fixed locking ring 13b, or an adhesive can be applied to the inner peripheral surface of the fixed locking ring 13b, so that the fixing can be performed more reliably.

  Thereby, a plurality of the filter plates 3 are overlapped and pressed through the filter cloth 7 and dehydrated, or even when the filter plates 3 are separated and the dehydrated cake in the filter chamber 3c is dropped, The net member 3g can be fixed around the supply hole 3d of the filter plate 3 in a stable state, and the mounting can be easily performed simply by fitting the fixed locking ring 13b covered with rubber or the like into the locking portion 13a. .

  Further, as shown in FIG. 5, as the net fixing means 14 around the supply hole 3d of the filtration object of the filter plate 3, as in the net fixing means 13, the supply hole 3d is provided on the front and back of the elastic covering member 3h. A locking portion 13a having a larger cylindrical outer peripheral surface is integrally formed, and the locking portion 13a having a cylindrical outer peripheral surface is covered with rubber or the like on the outside of an iron disk. The disc-shaped fixed locking ring 14a is fitted to sandwich the net member 3g, the through holes 14b are formed in the front and back fixed locking rings 14a, the through holes are also formed in the filter plate body 3a, and bolts and nuts are formed. The fastening member 14c is used for fastening and fixing.

  These fastening portions 13a, fixed locking rings 14a, and fastening members 14c such as bolts and nuts are lower or shorter than the rubber-lined frame members 3b and boss portions 3e. In such a state, a load is prevented from acting on the fastening member 14c such as the locking portion 13a, the fixed locking ring 14a, and the bolt / nut.

  In such a net fixing means 14, the net member 3g in which the attachment hole capable of penetrating the engaging portion 13a of the elastic covering member 3h is cut is attached to the rubber-lined surface of the filter plate body 3a of the filter plate 3. After the mounting, the fixed locking ring 14a is fitted into the locking portion 13a so that the net member 3g is sandwiched between the rubber lining of the filter plate main body 3a, and bolts and nuts are fastened through the through holes 14b. The member 14c is fastened and fixed. At this time, the adhesive can be more reliably fixed by applying an adhesive to the fixed locking ring 14a as necessary.

  Thereby, a plurality of the filter plates 3 are overlapped and pressed through the filter cloth 7 and dehydrated, or even when the filter plates 3 are separated and the dehydrated cake in the filter chamber 3c is dropped, The net member 3g can be fixed around the supply hole 3d of the filter plate 3 in a stable state, and a fixing locking ring 14a covered with rubber or the like is fitted into the locking portion 13a, and a bolt, a nut or the like This can be done simply by tightening with the fastening member 14c.

  As described above, the net fixing means 11 to 13 (14) described above may be carried out independently or in combination with each other. The net member 3g for drainage promotion can be attached to

  In the above embodiment, the case where the filter plate has a substantially square shape has been described as an example. However, the filter plate can be similarly applied to filter plates having other shapes such as a disk shape.

  In the above embodiment, the material of the elastic covering material such as rubber for the net fixing means may be the same material as or different from the elastic covering member of the filter plate, but is bonded with an adhesive. In some cases, the same material can be more strongly bonded.

It is a partial longitudinal cross-sectional view of the pressing state concerning one Embodiment of the filter plate structure of the filter press of this invention. It is a fragmentary sectional view of the load support boss part concerning one embodiment of the filter plate structure of the filter press of this invention. It is the fragmentary sectional view and partial front view of the frame member part concerning one Embodiment of the filter plate structure of the filter press of this invention. It is a fragmentary sectional view of the supply hole part of the filtration thing concerning one embodiment of the filter plate structure of the filter press of this invention. It is the fragmentary sectional view and partial front view by the other net fixing means of the supply hole part of the to-be-filtered material concerning one Embodiment of the filter plate structure of the filter press of this invention. It is a schematic block diagram of the filter press to which this invention is applied. It is the partial front view which notched a part of filter plate of the filter press with which this invention is applied. It is a schematic sectional drawing of a part of filter plate structure of the conventional filter press.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Stand 3, 3 Filter plate 3a Filter plate main body 3b Frame member 3c Filter chamber 3d Supply hole 3e Boss part 3f Discharge path 3g Net member 3h Elastic covering member 4 Guide rail 5 Hydraulic cylinder 6 Drainage chute 7 Filter cloth 10 Filter Filter plate structures 11 to 14 Net fixing means 11a Fixing ring member 12a Fixing protrusion 12b Fixing frame member 13a Locking portion 13b Fixing locking ring 14a Fixing locking ring 14b Through hole 14c Fastening member

Claims (7)

A filter plate structure of a filter press that superimposes and presses a plurality of filter plates, presses an object to be filtered through a filter cloth to a filter chamber formed between adjacent filter plates, and dehydrates.
A filter plate body provided with a frame member around and a plurality of load support bosses in the middle, and a supply hole for the filtration object and a discharge path for the filtrate,
An elastic covering member covering the filter plate body;
A net member for promoting drainage disposed on the surface of the filter plate body covered with the elastic covering member inside the frame member, excluding the load supporting boss portion and the supply hole,
A filter plate structure of a filter press, wherein the net member is provided on the elastic covering member by providing a net fixing means.   2. The filter plate structure of a filter press according to claim 1, wherein the net fixing means is constituted by a fixing ring member that is fitted and fixed to the load supporting boss portion.   A fixing protrusion that protrudes from the surface inside the frame member provided on the filter plate main body and / or the elastic covering member, and a fixing frame member that is fitted and fixed to the fixing protrusion. The filter plate structure of a filter press according to claim 1 or 2, wherein   The net fixing means is fitted on the outer periphery of the engaging portion and an engaging portion formed on the elastic covering member and having an outer peripheral surface that surrounds the inner wall portion and the front and back portions of the supply hole and protrudes from the supply hole to the front and rear surfaces. The filter plate structure of the filter press according to any one of claims 1 to 3, wherein the filter press structure is constituted by a fixed locking ring that is locked and locked.   The net fixing means is replaced with the fixed locking ring, the fixing ring disposed on the front and back of the elastic covering member with the filter plate body sandwiched on the outer periphery of the locking portion, and the front and back fixing rings penetrating The filter plate structure of the filter press according to claim 4, wherein the filter plate structure comprises a fastening member to be fixed.   6. The filter plate structure of a filter press according to claim 5, wherein the fixing ring is formed by covering a metal ring with an elastic covering member.   The filter plate structure of a filter press according to any one of claims 1 to 6, wherein the net fixing means is formed lower than a surface of the elastic covering member that covers the frame member.

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